Manual

If the Throttle Position Sensor is showing a fault condition then re-calibrate the throttle sensor

and check the wirin g

If the Manifold Absolute Pressure Sensor does not read near atmospheric pressure with the

engine off, or if it shows a fault condition, then check that the sensor is connected correctly.

Check that you have the correct model sensor and that the Main Set-up page information has

been set correctly .

If the Engine Speed reading is erratic, the trigger is most likely picking up ignition noise from

incorrect plugs or leads, electrical noise fro m coolin g fans, starter motor, alternator or other

electrical devices in the vehicle. Ensure that the trigger sign al wire is properly shielded and

that the shield is grounded securely.

If the Engine Speed is steady but wrong, check that the Main Set-up page contains the correct

information regarding number of cylinders. M ake sure the Multitooth trigger type is not

selected unless the engine has a multitooth wheel. If using a multitooth trigger, make sure the

number of teeth is correctly set for the number of teeth per cam

revolution.

If engine parameters are all showing unusual variation, make sure that the ECU is grounded

properly. Also check the engine and chassis grounds to the battery.

A.3 Starting problems

Fuel Pump doesn't prime when ignition switched on

The Haltech F10 will attempt to run the Fuel pump for about 2 seconds just after the ignition

is switched on. The fuel pump relay should be heard clicking in and out with the fuel pump. If

the relay clicks but the fuel pump doesn't work then check the wiring of the fuel pump and the

20A fuse in the fuse block.

Engine makes no attempt to start

Check the followin g:

ECU is operating (will co mmunicate ONLINE) during crankin g

Battery voltage and connections

Fuel Pump runs

Injector fuse is OK and injectors fire

Ignition system is operating properly and spark is available

Ignition timin g is correct

If the engine is flooding, reduce the bars in the fuel map that are being used during cranking

in the fuel map , the coolant correction map and the cold p rime map .

If the engine is not receivin g enou gh fuel and increasing those bars does not help , check that

fuel pressure is availab le and that the injectors op erate p rop erly (are cleaned and flow-tested).